js method of operation of the listbox

Select the person or department or any other time, often used two listbox, following this js code, we hope to give you convenience and bring their own

function SelectAll()
        {
            var lst1=window.document.getElementById("SourceListBox");
            var length = lst1.options.length;
            for(var i=0;i<length;i++)
            {
                var v = lst1.options[i].value;
                var t = lst1.options[i].text;
                var lst2=window.document.getElementById("DestinationListBox");
                lst2.options[i] = new Option(t,v,true,true);    
            }
            
        }
        
        function DelAll()
        {
            var lst2=window.document.getElementById("DestinationListBox");
            var length = lst2.options.length;
            for(var i=length;i>0;i--)
            {
                lst2.options[i-1].parentNode.removeChild(lst2.options[i-1]);
            }    
        }
        
        function SelectOne()
        {
            var lst1=window.document.getElementById("SourceListBox");
            var lstindex=lst1.selectedIndex;
            if(lstindex<0)
                return;
            var v = lst1.options[lstindex].value;
            var t = lst1.options[lstindex].text;
            var lst2=window.document.getElementById("DestinationListBox");
            lst2.options[lst2.options.length] = new Option(t,v,true,true);    
                
        }
        
        function DelOne()
        {
            var lst2=window.document.getElementById("DestinationListBox");
            var lstindex=lst2.selectedIndex;
            if(lstindex>=0)
            {
                var v = lst2.options[lstindex].value+";";
                lst2.options[lstindex].parentNode.removeChild(lst2.options[lstindex]);
            }
                
        }

Reproduced in: https: //www.cnblogs.com/zhangchenliang/archive/2010/08/02/1790645.html